March is one of the cooler months of the year in Post Falls, with average highs near 7.2°C and lows around -2.3°C (mean 2.5°C). It is a relatively wet time of year, averaging 79 mm of rainfall and 82% relative humidity across the period.
March is one of the cooler months of the year in Post Falls. Across 45 years of records, the warmest March in Post Falls was 1992 — when the month averaged 6.5°C — while the coldest was 2002 at -0.9°C. Typical March days reach 7.2°C with nights near -2.3°C. The long-term March temperature trend is broadly flat.
March is a relatively wet time of year in Post Falls, averaging 79 mm of rainfall. The wettest March on record was 2012 with 171 mm, while the driest was 1992 at 21 mm.
Relative humidity in Post Falls during March averages 82%. The most humid March was 2017 at 89%, and the least humid was 1992 at 73%.
March receives about 3.2 kWh/m²/day of solar energy in Post Falls. The sunniest Marchs were 1992 and 2019 at 3.9 kWh/m²/day, and the cloudiest was 2017 at 2.4.
Average wind speed in Post Falls during March is 1.1 m/s. The windiest March was 2012 at 1.4 m/s, while the calmest was 1992 at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 2.5°C | 2.5°C | 2.0°C | 2.7°C | 2.8°C | +0.3°C |
| Avg High | 7.1°C | 7.6°C | 6.6°C | 7.4°C | 7.6°C | +0.5°C |
| Avg Low | -2.2°C | -2.5°C | -2.7°C | -2.0°C | -2.1°C | +0.1°C |
| Avg Rain | 83 mm | 65 mm | 82 mm | 99 mm | 58 mm | -25 mm |
March temperatures in Post Falls have risen by about 0.4°C between 1981–1985 and 2021–2025.
March has ranged from a record low of -23.3°C (1989) to a record high of 20.9°C (2025).
Rainfall in March is a relatively wet time of year, averaging 79 mm, with a wettest year of 171 mm.
A good time to visit Post Falls
March is a good time to visit Post Falls, with days averaging 7.2°C and nights around -2.3°C (mean 2.5°C, cooler than Post Falls's yearly average) and moderate rainfall. August and July are marginally more temperate, but March still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 8.7°C | 4.0°C | -0.6°C | 20.9°C | -4.6°C | 101 mm | 85% | 1.3 m/s | 3 |
| 2024 | 8.5°C | 3.4°C | -1.7°C | 19.3°C | -8.4°C | 56 mm | 80% | 1.1 m/s | 3.4 |
| 2023 | 5.2°C | 0.6°C | -4.1°C | 11.4°C | -10.4°C | 51 mm | 83% | 1.1 m/s | 3.1 |
| 2022 | 8.4°C | 3.6°C | -1.1°C | 18.8°C | -8.0°C | 66 mm | 81% | 1.1 m/s | 3.3 |
| 2021 | 8.3°C | 3.0°C | -2.3°C | 15.2°C | -5.1°C | 30 mm | 78% | 1.1 m/s | 3.6 |
| 2020 | 6.7°C | 1.9°C | -2.8°C | 12.6°C | -11.9°C | 45 mm | 79% | 1.3 m/s | 3.2 |
| 2019 | 6.3°C | 0.3°C | -5.6°C | 18.2°C | -23.1°C | 24 mm | 83% | 1 m/s | 3.9 |
| 2018 | 7.0°C | 2.1°C | -2.8°C | 14.7°C | -8.7°C | 56 mm | 83% | 1.2 m/s | 3.2 |
| 2017 | 6.9°C | 2.9°C | -1.0°C | 14.5°C | -5.8°C | 167 mm | 89% | 1.2 m/s | 2.4 |
| 2016 | 8.8°C | 4.0°C | -0.8°C | 16.9°C | -4.8°C | 114 mm | 82% | 1.3 m/s | 3.1 |
| 2015 | 10.7°C | 5.4°C | 0.2°C | 19.5°C | -9.0°C | 89 mm | 78% | 1.2 m/s | 3.4 |
| 2014 | 6.4°C | 2.0°C | -2.5°C | 11.1°C | -17.6°C | 134 mm | 84% | 1.2 m/s | 3.1 |
| 2013 | 7.3°C | 2.8°C | -1.7°C | 18.0°C | -5.9°C | 60 mm | 82% | 1.1 m/s | 3.2 |
| 2012 🌧️ | 5.8°C | 1.6°C | -2.5°C | 15.0°C | -8.4°C | 171 mm | 87% | 1.4 m/s | 2.6 |
| 2011 | 5.5°C | 1.7°C | -2.0°C | 13.1°C | -4.9°C | 121 mm | 89% | 1.2 m/s | 2.7 |
| 2010 | 9.0°C | 3.7°C | -1.6°C | 15.6°C | -5.0°C | 56 mm | 78% | 1.1 m/s | 3.5 |
| 2009 | 3.7°C | -0.7°C | -5.1°C | 12.9°C | -19.1°C | 114 mm | 86% | 1.2 m/s | 3.1 |
| 2008 | 3.4°C | -0.6°C | -4.5°C | 7.3°C | -8.2°C | 90 mm | 87% | 1.1 m/s | 3 |
| 2007 | 8.7°C | 3.5°C | -1.7°C | 14.4°C | -14.3°C | 75 mm | 84% | 1.2 m/s | 3 |
| 2006 | 6.1°C | 1.8°C | -2.5°C | 13.6°C | -9.3°C | 60 mm | 85% | 1.1 m/s | 2.8 |
| 2005 | 9.4°C | 4.2°C | -1.0°C | 15.2°C | -4.1°C | 91 mm | 76% | 1.3 m/s | 3.5 |
| 2004 | 10.0°C | 4.4°C | -1.2°C | 18.8°C | -4.3°C | 45 mm | 78% | 1.2 m/s | 3.4 |
| 2003 | 6.9°C | 2.9°C | -1.2°C | 16.8°C | -6.0°C | 118 mm | 85% | 1.2 m/s | 2.7 |
| 2002 ❄️ | 3.4°C | -0.9°C | -5.2°C | 11.0°C | -14.2°C | 92 mm | 87% | 1.2 m/s | 2.7 |
| 2001 | 8.0°C | 2.7°C | -2.7°C | 17.2°C | -7.8°C | 53 mm | 80% | 1.2 m/s | 3.3 |
| 2000 | 6.7°C | 2.3°C | -2.1°C | 14.0°C | -4.0°C | 80 mm | 83% | 1.1 m/s | 3.2 |
| 1999 | 7.0°C | 2.1°C | -2.8°C | 17.7°C | -8.9°C | 48 mm | 83% | 1.2 m/s | 3.1 |
| 1998 | 7.1°C | 2.6°C | -1.9°C | 15.4°C | -9.8°C | 80 mm | 84% | 1 m/s | 3.2 |
| 1997 | 5.1°C | 0.9°C | -3.3°C | 14.6°C | -16.8°C | 125 mm | 87% | 1.3 m/s | 3.1 |
| 1996 | 6.0°C | 0.8°C | -4.4°C | 13.5°C | -13.8°C | 61 mm | 81% | 1.1 m/s | 3.2 |
| 1995 | 7.4°C | 2.3°C | -2.8°C | 17.0°C | -11.7°C | 92 mm | 80% | 1.1 m/s | 3.4 |
| 1994 | 9.0°C | 3.5°C | -1.9°C | 20.2°C | -5.6°C | 43 mm | 75% | 1.1 m/s | 3.6 |
| 1993 | 6.8°C | 1.9°C | -2.9°C | 12.9°C | -8.0°C | 65 mm | 85% | 1 m/s | 3.2 |
| 1992 🔥 | 12.9°C | 6.5°C | 0.0°C | 19.3°C | -4.4°C | 21 mm | 73% | 0.8 m/s | 3.9 |
| 1991 | 5.9°C | 1.4°C | -3.0°C | 17.7°C | -6.0°C | 78 mm | 82% | 1.1 m/s | 3.2 |
| 1990 | 8.4°C | 3.0°C | -2.5°C | 17.0°C | -8.8°C | 36 mm | 78% | 1 m/s | 3.8 |
| 1989 | 4.7°C | 0.4°C | -4.0°C | 13.1°C | -23.3°C | 130 mm | 88% | 1.1 m/s | 2.9 |
| 1988 | 6.9°C | 2.3°C | -2.3°C | 13.9°C | -6.0°C | 87 mm | 78% | 1.3 m/s | 3.3 |
| 1987 | 7.6°C | 3.1°C | -1.5°C | 16.2°C | -7.8°C | 91 mm | 81% | 1.1 m/s | 3.3 |
| 1986 | 9.8°C | 4.5°C | -0.9°C | 15.2°C | -3.6°C | 63 mm | 83% | 1.1 m/s | 3.3 |
| 1985 | 3.9°C | -0.6°C | -5.1°C | 9.8°C | -13.6°C | 61 mm | 86% | 1 m/s | 3.7 |
| 1984 | 7.5°C | 3.3°C | -1.0°C | 14.3°C | -4.6°C | 79 mm | 86% | 1 m/s | 3.1 |
| 1983 | 8.4°C | 3.8°C | -0.8°C | 13.2°C | -5.2°C | 101 mm | 84% | 1.1 m/s | — |
| 1982 | 5.8°C | 1.6°C | -2.7°C | 13.1°C | -5.0°C | 85 mm | 84% | 1.2 m/s | — |
| 1981 | 9.7°C | 4.3°C | -1.2°C | 15.4°C | -3.8°C | 52 mm | 77% | 1.1 m/s | — |
Actual recorded March data for each year, 1981–2025 — sourced from NASA POWER.
The average high in March is around 7.2°C with lows near -2.3°C (mean 2.5°C), based on 45 years of NASA POWER data.
March averages 79 mm of rainfall in Post Falls, a relatively wet time of year. The wettest on record was 171 mm in 2012.
The hottest March reached 20.9°C in 2025. The coldest dipped to -23.3°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average March temperatures have risen by about 0.4°C. Daytime highs moved from 7.1°C to 7.8°C and overnight lows from -2.2°C to -2°C over the same span.
March is one of the cooler months of the year in Post Falls and a relatively wet time of year, so plan for around 7.2°C daytime highs and -2.3°C at night.
Not quite — March is the 5th coolest month in Post Falls, averaging 2.5°C.
For March in Post Falls, pack warm layers and a jacket for chilly mornings, with typical highs of 7.2°C and lows of -2.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in March averages 82% — quite humid.
Average wind speed in March is 1.1 m/s. The windiest March on record averaged 1.4 m/s (2012).
The wettest March on record was 2012 with 171 mm. On average, March sees 79 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Post Falls behaves each March, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for March specifically, along with year-by-year records and how the month has changed over the decades.
